How long is the Otira Tunnel?

The Otira Tunnel is 8.5 kilometers long and features a steep grade.

What should I expect when traveling through the Otira Tunnel?

Expect a unique experience as the train travels through this impressive 8.5 km long tunnel, which is a highlight of the journey.

What was significant about the Otira Tunnel's construction?

Construction took 15 years and was interrupted by World War I, opening in 1923 as the longest tunnel in the British Empire at that time.

Otira Tunnel, Otira

Otira Tunnel, a marvel of engineering, stretches over 8.5 kilometers through the Southern Alps, connecting the remote village of Otira with Arthur's Pass. Opened in 1923, it was once the longest tunnel in the British Empire. Travelers often recount the eerie yet exciting experience of passing through this dark, historical passage. Vloggers on WanderVlogs frequently capture the moment the train emerges from the tunnel, revealing the dramatic landscapes of the West Coast. The tunnel stands as a testament to human ingenuity, making it a noteworthy stop for those exploring New Zealand's rail routes.

Last updated: Jan 25, 2026

Latest Adventures at Otira Tunnel

"The Otira Tunnel is a remarkable engineering feat that you can't miss on your journey!"
— Virtual Journeys NZ & Australia • Nov 10, 2024
"We're about to enter one of the longest tunnels in New Zealand, the Otira Tunnel!"
— From the Window Seat • Jun 18, 2023